641217920

素因数分解:

$2^7\times 5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:190

約数の個数: 256

約数和(自身を含む): 1880064000

約数和(自身を除く): 1238846080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 49, 56, 64, 70, 80, 92, 98, 112, 115, 127, 128, 140, 160, 161, 184, 196, 224, 230, 245, 254, 280, 320, 322, 343, 368, 392, 448, 460, 490, 508, 560, 635, 640, 644, 686, 736, 784, 805, 889, 896, 920, 980, 1016, 1120, 1127, 1270, 1288, 1372, 1472, 1568, 1610, 1715, 1778, 1840, 1960, 2032, 2240, 2254, 2540, 2576, 2744, 2921, 2944, 3136, 3220, 3430, 3556, 3680, 3920, 4064, 4445, 4480, 4508, 5080, 5152, 5488, 5635, 5842, 6223, 6272, 6440, 6860, 7112, 7360, 7840, 7889, 8128, 8890, 9016, 10160, 10304, 10976, 11270, 11684, 12446, 12880, 13720, 14224, 14605, 14720, 15680, 15778, 16256, 17780, 18032, 20320, 20447, 20608, 21952, 22540, 23368, 24892, 25760, 27440, 28448, 29210, 31115, 31360, 31556, 35560, 36064, 39445, 40640, 40894, 43561, 43904, 45080, 46736, 49784, 51520, 54880, 56896, 58420, 62230, 63112, 71120, 72128, 78890, 81280, 81788, 87122, 90160, 93472, 99568, 102235, 103040, 109760, 113792, 116840, 124460, 126224, 142240, 143129, 144256, 157780, 163576, 174244, 180320, 186944, 199136, 204470, 217805, 219520, 233680, 248920, 252448, 284480, 286258, 315560, 327152, 348488, 360640, 373888, 398272, 408940, 435610, 467360, 497840, 504896, 568960, 572516, 631120, 654304, 696976, 715645, 721280, 796544, 817880, 871220, 934720, 995680, 1001903, 1009792, 1145032, 1262240, 1308608, 1393952, 1431290, 1635760, 1742440, 1869440, 1991360, 2003806, 2290064, 2524480, 2617216, 2787904, 2862580, 3271520, 3484880, 3982720, 4007612, 4580128, 5009515, 5048960, 5575808, 5725160, 6543040, 6969760, 8015224, 9160256, 10019030, 11450320, 13086080, 13939520, 16030448, 18320512, 20038060, 22900640, 27879040, 32060896, 40076120, 45801280, 64121792, 80152240, 91602560, 128243584, 160304480, 320608960, 641217920]

約数ペア:

[(1, 641217920), (2, 320608960), (4, 160304480), (5, 128243584), (7, 91602560), (8, 80152240), (10, 64121792), (14, 45801280), (16, 40076120), (20, 32060896), (23, 27879040), (28, 22900640), (32, 20038060), (35, 18320512), (40, 16030448), (46, 13939520), (49, 13086080), (56, 11450320), (64, 10019030), (70, 9160256), (80, 8015224), (92, 6969760), (98, 6543040), (112, 5725160), (115, 5575808), (127, 5048960), (128, 5009515), (140, 4580128), (160, 4007612), (161, 3982720), (184, 3484880), (196, 3271520), (224, 2862580), (230, 2787904), (245, 2617216), (254, 2524480), (280, 2290064), (320, 2003806), (322, 1991360), (343, 1869440), (368, 1742440), (392, 1635760), (448, 1431290), (460, 1393952), (490, 1308608), (508, 1262240), (560, 1145032), (635, 1009792), (640, 1001903), (644, 995680), (686, 934720), (736, 871220), (784, 817880), (805, 796544), (889, 721280), (896, 715645), (920, 696976), (980, 654304), (1016, 631120), (1120, 572516), (1127, 568960), (1270, 504896), (1288, 497840), (1372, 467360), (1472, 435610), (1568, 408940), (1610, 398272), (1715, 373888), (1778, 360640), (1840, 348488), (1960, 327152), (2032, 315560), (2240, 286258), (2254, 284480), (2540, 252448), (2576, 248920), (2744, 233680), (2921, 219520), (2944, 217805), (3136, 204470), (3220, 199136), (3430, 186944), (3556, 180320), (3680, 174244), (3920, 163576), (4064, 157780), (4445, 144256), (4480, 143129), (4508, 142240), (5080, 126224), (5152, 124460), (5488, 116840), (5635, 113792), (5842, 109760), (6223, 103040), (6272, 102235), (6440, 99568), (6860, 93472), (7112, 90160), (7360, 87122), (7840, 81788), (7889, 81280), (8128, 78890), (8890, 72128), (9016, 71120), (10160, 63112), (10304, 62230), (10976, 58420), (11270, 56896), (11684, 54880), (12446, 51520), (12880, 49784), (13720, 46736), (14224, 45080), (14605, 43904), (14720, 43561), (15680, 40894), (15778, 40640), (16256, 39445), (17780, 36064), (18032, 35560), (20320, 31556), (20447, 31360), (20608, 31115), (21952, 29210), (22540, 28448), (23368, 27440), (24892, 25760)]